# coding=utf-8

from typing import Type

from django.utils.translation import gettext_lazy as _
from rest_framework import serializers

from application.flow.common import WorkflowMode
from application.flow.i_step_node import INode, NodeResult


class VariableAssignNodeParamsSerializer(serializers.Serializer):
    variable_list = serializers.ListField(required=True,
                                          label=_("Reference Field"))


class IVariableAssignNode(INode):
    type = 'variable-assign-node'
    support = [WorkflowMode.APPLICATION, WorkflowMode.APPLICATION_LOOP, WorkflowMode.KNOWLEDGE,
               WorkflowMode.KNOWLEDGE_LOOP]

    def get_node_params_serializer_class(self) -> Type[serializers.Serializer]:
        return VariableAssignNodeParamsSerializer

    def _run(self):
        return self.execute(**self.node_params_serializer.data, **self.flow_params_serializer.data)

    def execute(self, variable_list, **kwargs) -> NodeResult:
        pass
